/** @format */
/**
 * Represents a line segment in a 2D space.
 */
export declare class Line {
    private _x1;
    private _y1;
    private _x2;
    private _y2;
    /**
     * Gets the x-coordinate of the first point.
     * @returns {number} The x-coordinate of the first point.
     */
    get x1(): number;
    /**
     * Gets the y-coordinate of the first point.
     * @returns {number} The y-coordinate of the first point.
     */
    get y1(): number;
    /**
     * Gets the x-coordinate of the second point.
     * @returns {number} The x-coordinate of the second point.
     */
    get x2(): number;
    /**
     * Gets the y-coordinate of the second point.
     * @returns {number} The y-coordinate of the second point.
     */
    get y2(): number;
    /**
     * Gets the difference in x-coordinates between the two points.
     * @returns {number} The difference in x-coordinates.
     */
    get dx(): number;
    /**
     * Gets the difference in y-coordinates between the two points.
     * @returns {number} The difference in y-coordinates.
     */
    get dy(): number;
    /**
     * Creates an instance of Line.
     * @param {number} x1 - The x-coordinate of the first point.
     * @param {number} y1 - The y-coordinate of the first point.
     * @param {number} x2 - The x-coordinate of the second point.
     * @param {number} y2 - The y-coordinate of the second point.
     */
    constructor(x1: number, y1: number, x2: number, y2: number);
    /**
     * Creates a new Line instance from an existing one.
     * @param {Line} other - The existing Line instance.
     * @returns {Line} A new Line instance.
     */
    static from(other: Line): Line;
    /**
     * Moves the first point to a new location.
     * @param {number} x - The new x-coordinate of the first point.
     * @param {number} y - The new y-coordinate of the first point.
     */
    movePoint1(x: number, y: number): void;
    /**
     * Moves the second point to a new location.
     * @param {number} x - The new x-coordinate of the second point.
     * @param {number} y - The new y-coordinate of the second point.
     */
    movePoint2(x: number, y: number): void;
    /**
     * Swaps the x and y coordinates of the first point.
     */
    swapXY1(): void;
    /**
     * Swaps the x and y coordinates of the second point.
     */
    swapXY2(): void;
    /**
     * Flips the x-coordinates of the two points.
     */
    flipX(): void;
    /**
     * Flips the y-coordinates of the two points.
     */
    flipY(): void;
    /**
     * Creates a new Line instance that is a copy of the current instance.
     * @returns {Line} A new Line instance.
     */
    clone(): Line;
    /**
     * Returns a string representation of the Line instance.
     * @returns {string} A string representation of the Line instance.
     */
    toString(): string;
}